Home / 205,561.77-308,260.90-79,131.81

Finding the Fourth Proportional to 205,561.77, 308,260.90 and 79,131.81

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Solution

The fourth proportional to 205,561.77, 308,260.90 and 79,131.81 is: 118,666.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,561.77 : 308,260.90 = 79,131.81 : x
  2. Step 2: Convert to fraction form
    205,561.77/308,260.90 = 79,131.81/x
  3. Step 3: Cross multiply
    205,561.77x = 308,260.90 × 79,131.81
  4. Step 4: Simplify right side
    205,561.77x = 24,393,242,967.66
  5. Step 5: Solve for x
    x = 24,393,242,967.66/205,561.77
  6. Step 6: Final answer
    x = 118,666.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.